/**
 * Copyright (c) 2010, Casey Lai
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.
 * 
 * Neither the name of the Cheetah Group nor the names of its contributors may be
 * used to endorse or promote products derived from this software without specific
 * prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 */

package org.cheetahworkflow.designer.model;

import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;

public abstract class Element implements Cloneable {

	private static final long serialVersionUID = -4623734266120783673L;
	
	public static final String PROP_LOCATION = "LOCATION";
	
	public static final String PROP_SIZE = "SIZE";
	
	public static final String PROP_NAME = "NAME";
	
	public static final String PROP_DESCRIPTION = "DESCRIPTION";
	
	public static final String PROP_CAPTION = "CAPTION";
	
	public static final String PROP_CLASS = "CLASS";
	
	public static final String PROP_REF = "REF";
	
	public static final String PROP_CLASSPATH = "CLASSPATH";
	
	public static final String PROP_PARAMETER = "PARAMETER";

	PropertyChangeSupport listeners = new PropertyChangeSupport(this);

    public void addPropertyChangeListener(PropertyChangeListener listener) {
        listeners.addPropertyChangeListener(listener);
    }    

    public void removePropertyChangeListener(PropertyChangeListener listener) {
        listeners.removePropertyChangeListener(listener);
    }

    protected void firePropertyChange(String prop, Object oldValue, Object newValue) {
        listeners.firePropertyChange(prop, oldValue, newValue);
    }

    protected void fireStructureChange(String prop, Object child) {
        listeners.firePropertyChange(prop, null, child);
    }

}
